January 24 1997

This page contains demonstration Applets and links to test Applets that show off various features of the subArctic toolkit and/or the interactor library. These demos are designed to show interaction techniques which go beyond the static collection of widgets mind set. These are all interfaces which are easy to do with subArctic, but which would be much more difficult in other available toolkits.

It takes a little time for the toolkit to load the first time (once its cached things will go much faster). Also, if you are running a browser that does not support .zip archives (such as Netscape prior to version 3.0) when you first click on an interface it may pause to load additional classes. For the next release we are working on subset archives to improve loading time. The availability of compressed archive formats should also significantly improve this situation.

Window Shade Container (pull the string)

This demo shows the window shade container object. This is not a special purpose effect. The shade object is a container that can be reused -- it will hold any two other collections of interactors that you care to put inside it! Further, this kind of dynamic effect is a normal part of the toolkit that works smoothly with everything else. Facilities are provided to make it easy and common place to create this kind of custom interaction whenever you need it. To see how the shade interactor is constructed, see the User's Manual in the "Custom Interactor Example" section




If you were running a Java capable browser you would see the shade_test applet here.


Debugging Lens

This demo shows a semantic lens useful for debugging. Move this lens over the top of the interface to see the interactor objects making up the interface and their bounding boxes. Hint: dragging in the area to the right will create lines -- try this under the lens.

All the demos on this page have been set up with debugging lenses installed (a one line change to any subArctic applet). To bring up the lens hold down the shift and control keys and click a mouse button inside the applet. Doing this again will remove the debug lens (except the one below which is always up).

Platform Note: Under Netscape 3.0 the Mac the lens rendering "spills out" past the lens. This is due to a serious clipping bug in the Netscape implementation of AWT.

If you were running a Java capable browser you would see the sem_lens applet here.

Shadow Drag

This demo demonstrates the use of an advanced drawing effect within an interaction. These are not bits drawn on a canvas. The objects being dragged here are normal live toolkit objects which have been placed in a shadow_drag_container object (bring up the debug lens to see the interactors). This container will support shadow drag of ANY subArctic interactors, even ones that were written before or after the shadow drag container. The container does not need to know anything special about the interactor, and the interactor does not need to know it is in a shadow drag container.

If you were running a Java capable browser you would see the shadow_drag_lens applet here.

Animation Support

As indicated above, animation is considered a normal part of subArctic interfaces. This applet is a variation on the classic Hello World interface which illustrates some of the toolkit's built in animation features. Only a single button is animated here, however, the effect is created by a very general anim_mover_container object which can provide animation to ANY set of subArctic objects, just by placing them in the container and scheduling animation transitions for them. This interface was built with about 135 lines of code (see sub_arctic/test/hello_world_anim.java).

If you were running a Java capable browser you would see the hello_world_anim applet here.

Small Demo Applications

Image Cutter

This application reads in images (given a URL), allows the user to specify a sub-image, and write that out to a file as Java code suitable for statically initializing an in-memory subArctic loaded_image object. (Note: due to security restrictions, many browsers will not actually let you write out the result, so you may need to us use Appletviewer if you want to use this application for real.)

sub_arctic/test/image_cutter.html

 

Mail Demo

This program simulates the interactive features of a mail browser (although it does not actually send or receive mail). It includes a good example of a drag and drop interactions as well as a bit of animation. This program is still a bit experimental and has some known bugs that we did not have time to fix prior to the release. Please accept our apologies if it crashes on you -- we should have it fixed soon after we recover from the release.

Platform Note: This applet does not work correctly under Netscape 3.0 on the Mac due to the clipping bugs (and other bugs) in Netscape on that platform.

sub_arctic/demo_apps/mail_demo.html

 

Spread Sheet

This application is a re-implementation of an AWT demo program under subArctic. Special thanks to Colleen Kehoe (one of our alpha testers) for creating this for us and contributing it to our demo page.

sub_arctic/demo_apps/spread_sheet.html

Applets from sub_arctic.test

The following links go to pages for additional test programs found in the sub_arctic.test package. These are were not developed as demos per se, they are being used for regression testing of various interactor classes during development. However, they provide examples of how to use various interactors and/or show off some additional features.

sub_arctic/test/anim_test.html
sub_arctic/test/backdrop_lens_test.html
sub_arctic/test/circ_lens_test.html
sub_arctic/test/component_flow_test.html
sub_arctic/test/constraint_patterns.html
sub_arctic/test/constraint_test.html
sub_arctic/test/cycle_test.html
sub_arctic/test/debug_top_test.html
sub_arctic/test/drag_container_test.html
sub_arctic/test/drag_limit_test.html
sub_arctic/test/edit_test.html
sub_arctic/test/ext_test.html
sub_arctic/test/flow_test.html
sub_arctic/test/focus_lens_test.html
sub_arctic/test/frame_test.html
sub_arctic/test/frame_test2.html
sub_arctic/test/grabber_lens_test.html
sub_arctic/test/gradient_test.html
sub_arctic/test/grow_container_test.html
sub_arctic/test/hello_world.html
sub_arctic/test/hello_world_anim.html
sub_arctic/test/hello_world_anim_source.html
sub_arctic/test/hello_world_canvas.html
sub_arctic/test/hello_world_debug.html
sub_arctic/test/hello_world_debug_source.html
sub_arctic/test/hello_world_source.html
sub_arctic/test/hierarchy_test.html
sub_arctic/test/image_cutter.html
sub_arctic/test/isolation_test.html
sub_arctic/test/isolation_lens_test.html
sub_arctic/test/line_test.html
sub_arctic/test/listbox_test.html
sub_arctic/test/menu_test.html
sub_arctic/test/misc_test.html
sub_arctic/test/new_style_test.html
sub_arctic/test/overkill_test.html
sub_arctic/test/panner_test.html
sub_arctic/test/percent_test.html
sub_arctic/test/permanent_test.html
sub_arctic/test/point_test.html
sub_arctic/test/range_slider_test.html
sub_arctic/test/rot_lens_test.html
sub_arctic/test/sem_lens_test.html
sub_arctic/test/shade_test.html
sub_arctic/test/shadow_drag_test.html
sub_arctic/test/size_test.html
sub_arctic/test/sliding_styl_text_test.html
sub_arctic/test/sliding_text_test.html
sub_arctic/test/snap_container_test.html
sub_arctic/test/style_internal_test.html
sub_arctic/test/style_test.html
sub_arctic/test/style_test2.html
sub_arctic/test/tab_test.html
sub_arctic/test/tab_lens_test.html
sub_arctic/test/text_extract_test.html
sub_arctic/test/text_extract_test2.html
sub_arctic/test/text_toggle_test.html
sub_arctic/test/thread_test.html
sub_arctic/test/transp_test.html
sub_arctic/test/traversal_test.html
sub_arctic/test/vis_test.html

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Scott Hudson

Last revision: January 24 1997